Orrery

Orrery is a Boss relic in Slay the Spire 2 that lets you choose and add 5 cards to your deck immediately upon pickup. This massive influx of cards gives you an unparalleled opportunity to rapidly shape your deck's direction, filling gaps in your strategy or doubling down on key synergies all at once.

Five card picks is equivalent to roughly half an act's worth of card rewards, all concentrated into a single moment. This allows you to grab multiple copies of a key card, assemble a combo that requires several specific pieces, or shore up both your offensive and defensive capabilities simultaneously. The ability to choose exactly which cards you want eliminates the randomness of normal card rewards.

Orrery is strongest when you have a clear deck strategy in mind and need specific cards to execute it. It is weaker when you do not yet know what direction your deck should take, as adding 5 unfocused cards can bloat your deck. The relic provides no ongoing benefit after its initial effect, which means it competes poorly with Energy-granting Boss relics in the long term. However, the immediate power spike from 5 hand-picked cards can be transformative, especially when taken in Act 1 to establish a powerful foundation for the rest of the run.